According to the MISC on the BodyBuilding website: A white knight is defined as a male that treats woman as goddesses and does nothing but shower then in compliments on how wonderful and beautiful and special they are. Maybe be used as a noun or a verb.

Brah, if you keep white knighting every girl you meet, you'll never get as action.

A gaming term used to describe a male gamer who, in a desperate attempt to get himself laid, will attempt to woo or impress any female gamer he comes across online by being overly defensive of her and giving her special attention, such as playing as a healing class and only healing her.

Why do those white knights try so hard to impress the girls they run into online? Do they actually think they're going to get laid?

Got some girls being butt-hurt? Got some white teenaged males with nothing to do?
Introducing white knighting! A perfectly respectable act of suddenly becoming chivalric and nice by the mere presence of e-boob.

1) A man who stands up for a womens right to be an absolute equal, but then steps up like a white knight to rescue her any time that equality becomes a burden.

2) A man who Promotes gender equality but practices special privilege for women.

When a woman believes she can do absolutely everything a man can do and better, but when she is asked to list something heavy as her everyday chore the white knight will come to defend her when she protests.